Improvement in molding and venting-machine



PATENTED AUG. 9, 1870,

No. 106,273. y

W. NEWSHAM. MOLDING AND VENTING MACHINE,

S'BHEETB-SEBET l.

H mw F INVENTOR. l

WlTNEssEs.

WILLIAM NEWSHAM, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO Mounts, Tassen' a oo., or sAMnPLAc/E.

Letters `Patent o. 106,273, dated August 9, 1870.

IMPRVEMENT IN MOLDING- AND VETING--MACHINB J The Schedule referred to in these Letters Patent' and making` part o! the sam? 4 I, WILLIAM NnwsnAM, of the city ofPhiladel phia and State of' Pennsylvania, have invented cerf tain Improvements .in Molding and Venting-Ma shines, ofwhichithe following is a specicatioin The nature of my invention mainly consists of a machine in which a plat-e carrying patterns for making the impressions' for settingv cores, and also a plate carrying venting wires, are operated by lneans ol' mntilated vertical pinions and racks, in connection with said plates, in such a manner as'to elevate and depress the same, fox-"molding and venting without any backward movement of the pinion-shaft, as hereinafter described. l

It also consists of such a construction and arrangement of the -pinion which gives motion to the pattern-plate in relation to the pinions which produce.

the movement of the venting-wires, as to cause the latter to commence descending before the former, to prevent the breakinglof-the sand above the imprint patterns.

Io enable others skilled in the art to which my improvement appertains to make and use my invention, I will now give a detailed description thereof.

In the accompanying drawing which makes a part of this specification- Figurel l is a plan viewof the machine. Figure 2 is a side elevation ofthe same. Figure 3 is a vertical section at the line x :c of tig. 1. r

Figure 4 is a sideview of a pinion, M.

Like letters in all the figures indicate the same parts.` l

A is atcase containing the molding devices.

B is a stationary follow-board forming vthe top of the case, having holes aa a, for receiving the dovvels of the flask.

The said followfboard has openings band cl d, for the support of the ends ot the guide-posts C and D I), the lower ends of which are passed through the bottom e of the case A, and confined by means of nuts f. v 4- The board is also provided with perforations g, for the` passage -of the patterns E, the lower ends `of which arepermanently confined to the plate F.

Ihe said plate has vertical movements given it by means of a rack, G, on the hub Tt ot' the plate, and the mutilated pinion H on the horizontal shaft J, which is provided with a hand-wheel, K, 'for operate ing the same, as hereinafter described.

The atterns E are such as are used for making imprints for setting cores for balls, or mandrels used in making metal tubes.

For venting the sand above the cores, there are' wires R,vwhich are guided attheir upper ends by central holes It, in the patterns E.

The lower ends of the wiresvare secured in the plate L, which have hubsl l, that move on the guide# posts' D D, above described. t 1

Y Thesaid 'plate L is elevated and depressed by means of the mutilated pinions M M on the shaft J,

-and the vertical racks N N onthe saidrhubs H.

The operation is as follows:

The hand-wheel K is turned in the direction of the arrows u ntil the patterns E are elevated far enough above the follow-board B for forming the imprints, as seen in figs. 2 and 3; then the catch O is forced forward by the wire spring Pin the stationary socket Q,

so that the catch enters the notch fm, in the peripheryof the wheel.

When the patterns are thus brought to a state of rest, the flask is put in position Aou the ibllow-board B, and the sand rammed `in the flask in the usual manner; then, the hand-wheelK is again-turned fora ward, and the segmental portions of the pinions M'M,

having teeth u connect with the vertical racksN ot' the hubs l tof the plate L, carrying the wires R, until the wires are brought-to their elevated position seen in gs 2 and 3, during which time the segmental i blank 'v (whose peripheral .face is in the same circumferential line as that ofthe ends of the teeth) of lthe pinion H; passes under the tooth t of the rack G, and prevents the downward movement of pattern-plate F;

The teeth u of the pinions M Mare' disengaged from the racks N N before the segmental blank fu has passed beneath the tooth tof the rack Gr,'sol asv to` keep the patterns E in their elevated position until the venting wires It, bythe descent of the plate L,

are-withdrawn from the sand, to prevent the break v ing of the same. I l l I do not claim the vertical movement of the patterne by means of racks and pinions, as that is not new; but Y v What I do claim as new, and desire to secure by Letters Patent, is-` 1. The combination and arrangement of the mutilated pinions ,H and M M with the racks G and N N on the hubs l1,I and l l, the said pinions being constructed and arranged in relation to each other for elevating and depressing the patterns E and wires It, substantially in the manner and for the purpose set forth.

2. The construction of the pinion II with the segmental blank c, in combination with and for retaining the pattern-plate F in itselevat-ed position during the upward movement of the venting wires R and partial descentot the same, substantially in the manner and for the purpose specified. i y In testimony' that the above is myinvention I have `hereunto set my hand and aiiixed my` seal this 25th day of June, 1870;

' WILLIAM NEWSHAM. [Ls] VVltnesses:

THOMAS J. BEWLEY, J C. MILLER. 

